a sexual act in which two males and one female go scuba diving. While underwater each male releases into a chosen ear of the female. At this point the female descends to a lower depth in the water and releases the pressure from her ears. This creates cloudy water; therefore giving the appearance of an angry mermaid. This is a difficult maneuver to achieve; however if it is executed properly maximum pleasure can be attained.
the angry mermaid is not to be attempted by the underskilled...experts only!